You need to update package as the only version now available is 1.5.0.7 or 1.4.2.12 They've also revamped their website
These versions seem to have already been available when you filed the bug: 25 Jun 2006; Joshua Nichols <nichoj@gentoo.org> +files/sun-jre-bin-1.4.env, +files/sun-jre-bin-1.5.env: Version bumps, plus support for new Java system. The format of this was just fixed by me add the missing files but the point is still there. Please sync next time before filing bugs.